P31CF on 2021 Audi e-tron — Charge Cover A Recognition - Cover Locking
1 vehicles · 1 makes
Most Reported On
P31CF is an OBD-II diagnostic trouble code meaning “Charge Cover A Recognition - Cover Locking.” The onboard charger cannot correctly recognise the state of charge cover A's locking mechanism - the module's read of whether the charge flap/cover is locked or unlocked does not agree with the commanded state or the sensor feedback. Because the charger will not energise a socket whose cover state it cannot verify, this blocks or interrupts charging. Audi TSB 2061788 lists DTC P31CF00 among the codes stored in high-voltage battery charger J1050 on 2020-2021 e-tron quattro and e-tron Sportback with onboard-charger software level 0070. This code is most commonly reported on 2021 Audi e-tron.
Common Causes
Diagnostic Tools
P31CF does not use the standard P/B/C/U prefix. It may be a manufacturer-specific code, so verify that a scanner supports your exact year, model and module before buying.
FAQ
What does P31CF mean?
P31CF stands for "Charge Cover A Recognition - Cover Locking." The onboard charger cannot correctly recognise the state of charge cover A's locking mechanism - the module's read of whether the charge flap/cover is locked or unlocked does not agree with the commanded state or the sensor feedback. Because the charger will not energise a socket whose cover state it cannot verify, this blocks or interrupts charging. Audi TSB 2061788 lists DTC P31CF00 among the codes stored in high-voltage battery charger J1050 on 2020-2021 e-tron quattro and e-tron Sportback with onboard-charger software level 0070.
What are the most common causes of P31CF?
The most common causes of P31CF are: Outdated onboard-charger software (level 0070) - Audi's remedy is the OBC software update per TSB 2061788, Faulty charge-cover locking actuator or its position feedback, Moisture or corrosion in the charge-door connector affecting LIN feedback, Charge flap mechanically obstructed, iced, or misaligned. The specific cause varies by vehicle.
How much does it cost to fix P31CF?
Repair costs vary widely depending on the root cause and vehicle.
Which vehicles are affected by P31CF?
Au7o has documented P31CF across 1 vehicle models from 1 manufacturers: Audi.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.